diff --git a/configure b/configure
index 36746854a583898f775811b0185913762c80e144..3d5bb71800ab8d0c45e013358a7cd36d93fced45 100755
--- a/configure
+++ b/configure
@@ -1302,6 +1302,7 @@ HAVE_LIST="
     ibm_asm
     inet_aton
     inline_asm
+    io_h
     isatty
     isinf
     isnan
@@ -3503,6 +3504,7 @@ check_func_headers glob.h glob
 check_header dlfcn.h
 check_header dxva.h
 check_header dxva2api.h -D_WIN32_WINNT=0x0600
+check_header io.h
 check_header libcrystalhd/libcrystalhd_if.h
 check_header malloc.h
 check_header poll.h
diff --git a/libavformat/file.c b/libavformat/file.c
index c54ec2882f9b0920b35e4a4dec56d0762825bb92..4e8129e9aedcd9ca4eecb07123e5ffc6875bfd89 100644
--- a/libavformat/file.c
+++ b/libavformat/file.c
@@ -22,10 +22,12 @@
 #include "libavutil/avstring.h"
 #include "avformat.h"
 #include <fcntl.h>
-#if HAVE_SETMODE
+#if HAVE_IO_H
 #include <io.h>
 #endif
+#if HAVE_UNISTD_H
 #include <unistd.h>
+#endif
 #include <sys/stat.h>
 #include <stdlib.h>
 #include "os_support.h"